mandela visit here still resonates. lisa looks back at that historic visit with some of those who were there. >> the bay area who have given me and my delegation strength and hope to the continue. >> the strong connection between mandela and bay area clear the moment he stepped into the oakland coliseum june 30, 1990. he had been a 43 man for just 4 months. state senator hancock was on stage with mandela that day and at the time she was mayor of berkeley. one of only city in the world that sanked south africa. >> that turned out to be a movement that grew and east bay was the first place, that sanctioned. >> student led massive anti-apartheid protest. professor carson remembers those days. he's now the director of the martin luther king jr. research institute at stanford. >> i think that if miss having a person like that. he teaches about mandela and african american freedom struggle and losing the knife-year-old is significant on so many levels. >> when we think about mandela we can think in terms of he is on the level